package wei.xinya.leetCode;

import java.util.Arrays;
import java.util.HashMap;
import java.util.Map;

public class MyTest {
    public static int[] twoSum(int[] nums, int target) {
        Map<Integer, Integer> hashtable = new HashMap<>();
        for (int i = 0; i < nums.length; ++i) {
            if (hashtable.containsKey(target - nums[i])) {
                return new int[]{hashtable.get(target - nums[i]), i};
            }
            hashtable.put(nums[i], i);
        }
        return new int[0];
    }

    public static void main(String[] args) {
        int[] nums = new int[]{11, 2, 7, 15};
        int target = 9;

        Arrays.stream(twoSum(nums, target)).forEach(System.out::println);
    }
}
